<template>
  <ul class="todo-main">
    <li 
    :class="{active:isStyle === index}"
     @mouseenter="isStyle = index"
     @mouseleave="isStyle = -1"
     v-for="(todo,index) in todos"
     :key="todo.id">
      <label>
        <input type="checkbox" :checked="todo.comment" @change="Checkedtodo(index)"/>
        <span> {{ todo.title }} </span>
      </label>
      <button class="btn btn-danger" @click="emit('deletetodo',index)">删除</button>
    </li>
  </ul>
</template>

<script lang="ts">
import { defineComponent,ref } from "vue";

export default defineComponent({
  name: "List",
});
</script>

<script setup lang="ts">
import {todosType} from '../../App.vue'
  const isStyle = ref<number>(-1)
  defineProps<{
    todos:todosType
  }>()
  const emit = defineEmits<{
    (event:'isChecked',index:number):void
    (event:'deletetodo',index:number):void
  }>()
  const Checkedtodo = (index:number)=>{
    emit('isChecked',index)
  }
</script>

<style scoped>
/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}
li.active{
  background-color: greenyellow;
}
li.active .btn{
  display: block;
}
li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
</style>
